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Pemphigus foliaceus in dogs: hair loss occurs, skin becomes red, and itchy. Dogs suffering from autoimmune diseases of the skin may experience a variety of symptoms, including persistent itching and scratching, lesions, wounds, blisters, and other skin damage, as well as loss of skin pigment. [5]
Pyotraumatic dermatitis is caused by self-inflicted trauma to the skin, which is incited by pain or irritation, such as infestation with fleas or lice, [4] irritation from clippers, [3] allergic skin diseases, [4] diseases of the anal sacs, [4] inflammation of the ear canal, [4] foreign bodies or irritants within the coat, [4] or pain in muscles or joints. [4]
A dog with skin irritation and hair loss on its leg caused by demodectic mange. Infectious skin diseases of dogs include contagious and non-contagious infections or infestations. Contagious infections include parasitic, bacterial, fungal and viral skin diseases. One of the most common contagious parasitic skin diseases is Sarcoptic mange (scabies).
Typical signs in dogs include hair loss and scaly skin. [21] Sporotrichosis is a fungal disease caused by Sporothrix schenckii that affects both dogs and humans. It is a rare disease in dogs, with cat and horse infections predominating in veterinary medicine. The disease in dogs is usually nodular skin lesions of the head and trunk. [22]
Lick granulomas are especially seen in large active dogs left alone for long periods of time. [8] [9] It is often considered to be a form of canine obsessive-compulsive disorder. [10] [7] Other causes include bacterial or fungal infections, ectoparasites, metabolic disease, neoplastic disease, trauma causing nerve damage, allergies, or joint ...
The second stage, called the subclinical phase, has no outward signs and can last for the remainder of the dog's life, during which the dog remains infected with the organism. Some dogs are able to successfully eliminate the disease during this time. In some dogs the third and most serious stage of infection, the chronic phase, will commence.
Dogs with flea allergy dermatitis often show hair loss and eczematous skin rash on the lower back, upper tail, neck, and down the back of the legs. Cats with flea allergy dermatitis may develop a variety of skin problems, including feline eosinophilic granuloma , miliary dermatitis , or self-inflicted alopecia from excessive grooming.
One of the most common fungal diseases in dogs is ringworm, or dermatophytosis, an infection of the skin, hair, or nails. There are three fungal species that cause ringworm in dogs. About 70 percent of infections are caused by Microsporum canis, 20 percent by M. gypseum, and 10 percent by Trichophyton mentagrophytes. Signs include hair loss and ...